Grahame-Smith’s script will be based on a treatment by “21 Jump Street” and “The LEGO Movie” duo Phil Lord and Christopher Miller. The pair were reportedly considering it as a potential directorial effort, but their commitment to a Han Solo “Star Wars” anthology film prevents that.

Ezra Miller will star as Barry Allen/The Flash in the film which is currently targeting a March 3rd 2018 release. “Flash” would be Grahame-Smith’s feature directorial debut, but he is also writing the standalone “LEGO Batman” film at Warners.